elasticsearch笔记(4) java操作es的文档

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一. 创建document, 分为自动生成id和手动生成id

 1 # 创建文档 手动生成id
 2 POST /books/noval/1011
 3 {
 4   "name": "红楼梦",
 5   "author": "曹雪芹",
 6   "count": 5932222,
 7   "onsale": "1646",
 8   "descr": "红楼梦是一本女生命运的小说"
 9 }
10 
11 # 创建文档 自动生成id
12 POST /books/noval
13 {
14   "name": "水浒传",
15   "author": "施耐庵",
16   "count": 59322,
17   "onsale": "1546",
18   "descr": "一本关于农民起义的小说"
19 }

 

 1 //        准备json数据
 2         Person person = new Person();
 3         person.setName("jim");
 4         person.setAge(10);
 5         person.setId(1001);
 6 
 7         ObjectMapper mapper = new ObjectMapper();//jackson-bind插件中的对象
 8         String string = mapper.writeValueAsString(person);
 9 
10 
11 //        准备IndexRequest对象(设置好index  type  以及id,不加id会自动创建) POST /books/noval/1011
12         IndexRequest indexRequest = new IndexRequest(index,type, person.getId().toString());
13         indexRequest.source(string, XContentType.JSON);
14 
15         //  获取连接restHighLevelClient
16         HttpHost httpHost = new HttpHost(HOST,PORT);
17         RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
18         RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
19 //        通过client对象执行添加
20         IndexResponse indexResponse = restHighLevelClient.index(indexRequest, RequestOptions.DEFAULT);
21         DocWriteResponse.Result result = indexResponse.getResult();
22         System.out.println(result);
23     }

 二. 修改document

 1 //        1. 创建map
 2         Map<String, Object> map = new HashMap();
 3         map.put("name","tom");
 4         map.put("age", 100);
 5 //      2.建立updateRequest对象封装数据;
 6         String index = "person";
 7         String type = "man";
 8         String id = "1001";//需要通过id操作
 9         UpdateRequest updateRequest = new UpdateRequest(index, type, id);
10         updateRequest.doc(map);
11 //        3. clien操作
12         HttpHost httpHost = new HttpHost(HOST,PORT);
13         RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
14         RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
15         UpdateResponse update = restHighLevelClient.update(updateRequest, RequestOptions.DEFAULT);
16         System.out.println(update);

三, 删除document

 1  //1封装request对象
 2         String index = "person";
 3         String type = "man";
 4         String id = "1001";//需要通过id操作
 5         DeleteRequest deleteRequest = new DeleteRequest(index, type, id);
 6 //        2.用client删除
 7         HttpHost httpHost = new HttpHost(HOST,PORT);
 8         RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
 9         RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
10         DeleteResponse delete = restHighLevelClient.delete(deleteRequest, RequestOptions.DEFAULT);
11         System.out.println(delete);

 

四. 批量操作(通过client.bulk(bulk)来操作)

4.1 批量添加

 1 //        1. 准备多个person
 2         Person person1 = new Person(1003,"jack1",10);
 3         Person person2 = new Person(1004,"jack2",10);
 4         Person person3 = new Person(1005,"jack3",10);
 5 
 6         ObjectMapper mapper = new ObjectMapper();
 7         String p1 = mapper.writeValueAsString(person1);
 8         String p2 = mapper.writeValueAsString(person2);
 9         String p3 = mapper.writeValueAsString(person3);
10 
11 //           2. 创建BulkRequest对象
12         BulkRequest bulkRequest = new BulkRequest();
13         bulkRequest.add(new IndexRequest("person","man",person1.getId().toString()).source(p1, XContentType.JSON))
14                 .add(new IndexRequest("person","man",person2.getId().toString()).source(p2, XContentType.JSON))
15                 .add(new IndexRequest("person","man",person3.getId().toString()).source(p3, XContentType.JSON));
16 
17 //            3通过client操作
18         HttpHost httpHost = new HttpHost(HOST,PORT);
19         RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
20         RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
21 
22         BulkResponse bulk = restHighLevelClient.bulk(bulkRequest,RequestOptions.DEFAULT);
23         System.out.println(bulk);

4.2 批量删除

 1 //     1.准备deleteRequest
 2         String index = "person";
 3         String type = "man";
 4 
 5         DeleteRequest deleteRequest1 = new DeleteRequest(index, type, "1003");
 6         DeleteRequest deleteRequest2 = new DeleteRequest(index, type, "1004");
 7 
 8 //        2.创建bulk
 9         BulkRequest bulkRequest = new BulkRequest();
10         bulkRequest.add(deleteRequest1).add(deleteRequest2);
11 
12 //            3通过client操作
13         HttpHost httpHost = new HttpHost(HOST, PORT);
14         RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
15         RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
16 
17         BulkResponse bulk = restHighLevelClient.bulk(bulkRequest, RequestOptions.DEFAULT);
18         System.out.println(bulk);

 

posted @ 2021-02-14 15:44  当当和瓶瓶  阅读(489)  评论(0)  编辑  收藏  举报